Secondary structure in heterogeneous nuclear RNA: involvement of regions from repeated DNA sites.

Alkalies Base Sequence Cell Nucleus/analysis Centrifugation, Density Gradient Chemical Phenomena Chemistry DNA HeLa Cells Nucleic Acid Denaturation Nucleic Acid Hybridization Poliovirus RNA/analysis RNA, Messenger/analysis RNA, Viral/analysis Ribonucleases Transcription, Genetic Tritium

Alkalies RNA, Messenger RNA, Viral Tritium RNA DNA Ribonucleases